Effect of Ru on microstructural evolution during heat treatment in single crystal superalloys

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	Effect of Ru on microstructural evolution during heat treatment in single crystal superalloys
	L. R. Liu; T. Jin; J. L. Liu; X. F. Sun; Z. Q. Hu
	2014
发表期刊	Materials at High Temperatures
ISSN	0960-3409
卷号	31 期号:2 页码:155-161
摘要	The effect of Ru addition on the as cast microstructure, structural evolution during heat treatment and long term aging was employed in single crystal superalloys with different contents of Ru addition (0, 1.5 and 3.0 wt-%). The results show that NiAl based beta phase can occur in the interdendritic region in 3Ru alloy. With increasing Ru content in the alloys, the incipient melting temperature of alloy decreases gradually, while the liquidus and solidus changed slightly. After solution treatment and the same aging treatment, the gamma' phase size decreased with increasing Ru addition. An remarkable inverse partition of alloying elements, i.e. more matrix forming elements Re and Mo distribute to the gamma' phase and more Ni element distribute to the matrix, was observed in the alloys with more Ru content after aging treatment. Ru addition can accelerate the rafting of gamma' phase and suppress the precipitation of topologically close packed (TCP) phases effectively.
部门归属	[liu, l. r.] shenyang univ technol, mat sci & engn sch, shenyang 110870, peoples r china. [jin, t. ; liu, j. l. ; sun, x. f. ; hu, z. q.] chinese acad sci, inst met res, dept superalloy, shenyang 110016, peoples r china. ; liu, lr (reprint author), shenyang univ technol, mat sci & engn sch, shenyang 110870, peoples r china. ; lrliu@sut.edu.cn
关键词	Single Crystal Superalloy Ru Microstructure Heat Treatment Base Superalloy Gamma'-phase Precipitation Additions Re
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73307
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. R. Liu,T. Jin,J. L. Liu,et al. Effect of Ru on microstructural evolution during heat treatment in single crystal superalloys[J]. Materials at High Temperatures,2014,31(2):155-161.
APA	L. R. Liu,T. Jin,J. L. Liu,X. F. Sun,&Z. Q. Hu.(2014).Effect of Ru on microstructural evolution during heat treatment in single crystal superalloys.Materials at High Temperatures,31(2),155-161.
MLA	L. R. Liu,et al."Effect of Ru on microstructural evolution during heat treatment in single crystal superalloys".Materials at High Temperatures 31.2(2014):155-161.